Snow-plow



(No Model.) ZSheetS-Sheet 1.

L J. BERGENDAHL.

SNOW PLOW.

' No; 436,204. Patented sept. 9, 1890.

a m h s e e h s 2. La H A D.. Nw EL GP. mw Bw l L u. d 0 M 0 m No.436,204. vPatented Sept. 9, 1890.

frame.

VUNITED STATES PATENT OFFICE. I. f

LEWIS J .BERGENDAAHL OF PENDLETON, OREGON, ASSIGN OR OF TWO-THIRDSTO'THOMAS C. TAYLOR, OF SAME PLACE, AND JOHNy GAGEN, OF PORT SNOW- PLOW.

SPECIFICATION forming part of Letters Patent No. 436,204, datedSeptember 9, 1890. y

Application filed April 24, 1890.

To all whom it may concern.-

Be it known that I, ILEwrs J. BERGENDAHL, a citizen of the United Statesof America, residing at Pendleton, in the county of Umatilla and Stateof Oregon, have invented certain new and useful Improvements inSnow-Plows and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to letters ofreference marked thereon, which form a part of this specification.

My invention relates to certain new and useful improvements insnow-excavators, the object being to provide an excavator of the classshown in my prior Patents dated May 26, 1886, No. 342,566, and March 13,1888, No. 37 9,441, with hoes or cutters located above the rotaryexcavating-wheel, so as to loosen the snow above the same; also, inproviding an improved construction whereby the snow will be more readilyloosened and carried int-o the compartments formed in the rotary wheel,from which it is discharged by centrifugal force; and it consists in theconstruction and combination of the parts, as will be hereinafter fullyset forth, and particularly pointed out in the claims. l

' In the accompanying drawings, Figure 1 is a perspective view of arotary snow-plow or track-clearer constructed in accordance with myinvention, and Fig. 2 is a side view partly in section.

A refers to the main shaft mounted in bearings which are attached to asuitable truck- This shaft has rigidly attached at its forward end therotary cutter, and it is provided with cranks a a and a pinion b. Thecrank is rotated by suitable pitmen c c, which are connected in theusual manner to the motor for driving the rotary cutter.

To the forward end of the truck B is attached a superstructure C, havingat its upper portion above the casing for the rotary Wheel an openingwith inclined sides and vertical ends, through which the snow which isloosened and gathered in the compartments of the rotary plow isdischarged by centrifugal force. To the upper forward end Serial No.349,343- (No model.)

of the casingorsuperstructure C is journaled a transverse shaft D,carrying a series of arms D', the ends of. which are provided withcutters or. hoes d, and one end of said shaft is turned downwardly orhas secured thereto an arm E, connecting with a bar F, which isconnected at its opposite end with a crankshaft G, upon which is mounteda gear-wheel H. The shaft upon which the gear-wheel I-I is mounted ismovable laterally in its bearings, so that it may be thrown out o ffmeshwith the pinion h, and a lever I is pivpted to the upper side of thetruck B and provided ,Y

with a bifurcated end, which overlaps the shaft and abuts againstcollars rigidly secured to said shaft to eifect the lateral movementthereof. The upper end of this lever is adapted to engage with a notchedplate J,

and partition-plates K', which radiate from Y,

the center hub to form pockets or compartments open at the front as wellas at the outer ends, and in front of the walls K are secured acorresponding number of radiating shafts L, upon which are looselymounted blades or cutters f, which are curved in cross-section, and theouter edges of these blades are sharpened or beveled. The outer ends ofthe blades abut against stops m, located on the inner side of theserrated ring M between the radiating partition-walls K', and centrallythe blades are provided with cutters or projecting fingers n, which arepointed and curved upwardly, as shown, the sides thereof being beveled.The outer ring or band, which projects beyond the forward casing orsuperstructure, is serrated or provided with vsawteeth, so that as thesame is rotated it will better loosen theA snow. It will beobserved thatthe blades are pivoted so as to freely turn and present a series ofcorresponding cutting-edges, so that when the rotary eXca-.

vator is turned in one direction it will throw the snow by centrifugalforce out of the opening in the top of the superstructure io one side ofthe track, and when turned in an opposite direction will deposit on theopposite side. The series of projecting blades n upon the cutters assistmaterially in loosening the snow in advance of the pivoted blades, andthe snow is also loosened by the serrated band.

In previous devices there has been a liability of the rotary snowplowtunneling and leav ing an archway of snow, and this is entirelyprevented by providing such a snowplow with cutters above the same.IVhen the snow is of a moderate depth and does not extend above therotary plow, these hoes can `be thrown out of engagement with thedrivingshaft.

Having thus described my in vention,what I claim as new, and desire tosecure by Letters Patent, ism

l. The combination, with a rotary snow-plow constructed substantially asshown, of vertically-vibratin g pivoted hoes or cutters mounted on thesame frame as the rotary plow and adapted to operate above and infrontot said plow, substantially as set forth.

2. The combination, in a rotary snow-plow, of vertically-vibratin gpivoted cutters or excavators mounted above the rotary plow and adaptedto be operated from the driving-shaft thereof, substantially as setforth.

3. The combination, with arotarysuow-plow constructed substantially asshown, of a series of vibrating cutters or hoes'inounted 011 a shaft andconnected to the drivin g-shaft, and a lever for throwing the connectingmeans in and out of gear with the driving-shaft, sub1- stantially as setforth.

4. In a snow-plow or excavator, a series of pivoted blades provided withcutters n, located between the ends of said blades, substantially as setforth.

5. The combination, in a rotary snow-plow or excavatorhaving a seriesot' pivoted blades, of projecting fingers or cutters n, secured thereto,said fingers being curved and provided with beveled or sharpened edges,substantially as set forth.

6. The combination, in a rotary snow-plow,

of an excavating-wheel having a concave y back K, radiatingpartition-plates K', pivoted blades or cutters f in front of saidpartitionplates, a rim or tire M, having a serrated front edge and stopsfor limiting the movement of the pivoted blades, substantially as setforth.

7 In a rotary snowplow or excavator, a wheel-casing having au open-topdelivery and side walls, within which the rotary excavator turns, saidexcavator consisting of a concave rear plate, radialpartition-platesformingopen front and end compartments, a central hubattached to the driving-shaft, a rim With a serrated front edge, andpivoted cutters j'adapted to engage with stops carried by the serratedrim or t-i re and located between the partition-plates, saidcuttersfhaving projecting fingers n, the blades being adapted to reverseautomatically in accordance With the dir ection that the driving-shaftis turned, so as to deposit the snow on either side of the track,

'substantially as shown, and for the purpose Set forth.

8. The co1nbination,in a rotary snow-plow,

of a wheel having a central hub, concave back plate, rim M, and radialbars secured to the hub in front of the partition-plates, a series i

